public class Maybe {
    public static void main(String[] args){
        System.out.println("Hello!");
        System.out.println("================");
        System.out.println(Integer.MAX_VALUE);//注意别写成"Integer.MAX_VALUE"
        System.out.println(Integer.MIN_VALUE);
        System.out.println("=================");
        long b=10L;//L强调这个是个长整型
        System.out.println(Long.MAX_VALUE);
        System.out.println(Long.MIN_VALUE);
    }
}
